<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>vue</title>
</head>
<script src="vue.js"></script>
<body>
    <div id="app">
        {{title}}
    </div>
<script>
    var app=new Vue({
        el:'#app',
        data:{
            title:"后端君"
        }
    });

</script>
</body>
</html>